Apply a vendor credit to an existing bill payment

Users cannot edit an existing Bill Payment to apply a Bill Credit. This is because the bank account has already been deducted with the bill payment amount. When users edit a bill payment to apply a vendor credit, such bill credit will not be shown from the list. Users can only apply a bill credit to a new bill payment.

- As a resolution, users have two options:

1. Void the existing Bill Payment and create a new one so that the bill credit can be applied.

2. Apply the bill credit to future bills.